*ST YAZHEN: Abnormal fluctuations in stock trading*

ST Yazheng announcement: the company's stock prices have deviated by 12% for three consecutive trading days on July 24th, 25th, and 28th, 2025, indicating abnormal fluctuations in stock trading. The company predicts that the net profit attributable to the shareholders of the listed company in the first half of 2025 will be between -39.5 million to -33 million RMB, and the net profit attributable to the shareholders of the listed company excluding non-recurring gains and losses will be between -38 million to -32 million RMB. The company has conducted a self-examination, consulted with the controlling shareholder and the actual controller in writing. As of the disclosure date of this announcement, apart from the disclosed changes in control and tender offer matters, there are no other significant matters or risks that should be disclosed but have not been disclosed.